Right now the Silk Browser only works on 1st and 2nd Gen Fire TVs. Sadly no 3rd gen Fire TV support at this time. (Look for that to be added shortly.) There is also no 1st gen Fire Stick support as the sticks slower CPU is not powerful enough for the Silk Browser to work correctly.

The browser does not seem to support Flash but will support HTML5 video so sites like YouTube and more will allow you to stream video on your Fire TV with the Silk Browser.